Alloy aluminium tube profiles yog tsim los ntawm txoj kev extrusion, thaum hlau pas nrig yog tsim los ntawm txoj kev tensile. Cov txheej txheem extrusion feem ntau yog rau pem hauv ntej extrusion thiab thim rov qab extrusion. Forward extrusion yog qhov siv dav tshaj plaws hauv kev tsim thiab tsim khoom, thim rov qab extrusion tuaj yeem txo qhov extrusion quab yuam los ntawm 30% ~ 40%, qhov ceev extrusion yog qhov siab, thiab cov qauv thiab kev ua tau zoo ntawm cov khoom yog ib yam, tab sis cov khoom siv, cov cuab yeej. kev sib dhos, thiab kev tsim khoom lag luam yog qhov nyuaj, uas txwv nws txoj kev siv.
Extruded alloy aluminium kav thiab profiles raug rau cov txheej txheem cua sov-extrusion-tiav, thiab rau kev kho cua sov-kho aluminium alloys, quenching kuj tau ua. Lub tsev profiles yog extruded thiab ces quenched thiab tiav nyob rau hauv txoj kab nrog cua txias. Cov yeeb nkab phab ntsa nyias siv cov txheej txheem tsim khoom ntawm thawj extruding los tsim cov raj dawb paug thiab tom qab ntawd ua haujlwm txias, thiab cov txheej txheem extrusion thib ob feem ntau yog siv los tsim cov txheej txheem tsim cov txheej txheem me me ntawm cov raj extruded dawb paug thiab tom qab ntawd ua haujlwm txias rau cov cemented. alloy me-inch yeeb nkab.
Muaj ob txoj hauv kev ua haujlwm txias ntawm lub raj khoob: txias dov thiab kos duab. Cov txheej txheem txias dov muaj ntau qhov deformation ntawm ib qho dhau los (lub elongation coefficient tuaj yeem ncav cuag 8-10), uas tuaj yeem dov los ntawm qhov khoob kom ze rau qhov tuab ntawm cov khoom tiav ib zaug, tab sis cov khoom siv tus nqi siab thiab cov cuab yeej tsim khoom kuj tseem nyuaj dua. Cov cuab yeej thiab cov cuab yeej ntawm txoj kev ncab yog qhov yooj yim, cov lus qhia yooj yim hloov pauv thaum lub sijhawm tsim khoom, qhov loj ntawm cov khoom yog qhov tseeb, qhov saum npoo yog du, tab sis qhov deformation ntawm txhua qhov dhau los yog me me (qhov elongation coefficient yog nyob rau hauv 2). , cov txheej txheem ntau lawm yog ntau, thiab cov tawm los yog tsawg. Rau cov tawv alloy thiab high-magnesium aluminium alloy kav, cov txheej txheem ntawm txias dov lub extruded raj dawb paug thiab ces ncab tawm cov khoom tiav yog feem ntau saws. Ntshiab aluminium thiab alloy aluminium raj feem ntau extruded thiab ncab. Ntshiab aluminium thiab alloy aluminium kav hauv qab φ30mm tuaj yeem ua los ntawm coil stretching txheej txheem nrog kev ua haujlwm siab thiab tawm los, thiab xa mus rau hauv ib lub kauj. Nyob rau hauv tus txheej txheem ntawm txias dov thiab kos duab, ob peb intermediate annealing feem ntau yog nqa tawm. Tom qab ua tiav rau qhov loj ntawm cov khoom tiav, cov khoom tiav yuav tsum tau kho kom sov thiab ua tiav raws li qhov yuav tsum tau ua.
Aluminium alloy hlau txais cov txheej txheem ntau lawm ntawm kub extrusion-annealing-drawing-kub kho-tiav. Cov txhuas hlau siv rau cov neeg siv khoom feem ntau yog tsim nyob rau hauv lub Hoobkas xaim, thiab cov txheej txheem ntawm kev tsim cov txhuas hlau pas nrig thiab ces ncab yog feem ntau tau txais los ntawm kev nruam casting thiab dov.
Kev tsim cov hlau txhuas yeeb nkab yog ua los ntawm cov ntshiab txhuas thiab aluminium alloy sawb nrog zoo weldability li blanks, thawj pretreatment, txiav lub strip dawb paug rau hauv qhov yuav tsum tau dav ntawm welded yeeb nkab, thiab ces los ntawm kev sib sau-welding-tiav thiab lwm yam txheej txheem, lub nyias-walled welded yeeb nkab yog tsim, los yog nws yog txuas ntxiv mus ua tiav raws li ib tug stretched yeeb nkab dawb paug. Cov txheej txheem no muaj tus nqi qis dua piv rau cov txheej txheem extrusion-rolling-drawing lossis extrusion-drawing txoj kev, tab sis lub zog compressive ntawm cov yeeb nkab tsis zoo li cov yeeb nkab seamless.